James o



J. O. HEADRICK.

BREAK-OUT PIN.

APPLlCATlON FILED JULY 14. 1919 Patented Oct 21, 1919.

I a 2 IAME 0. HEAnRum, nmwtob JAMES O. HEADRICK, OF HUMBLE, TEXAS;

. BREAK-OUT PIN.

Specification of Letters Patent. Patentd Oct. 21; 1919.

Application filed July 14, 1919. Serial mlalasae;

To all'whom it may concern:

Be it known that I, JAMES O. 'HnAnRIoK,

a citizen of the United States, residing at Humble, Harris county, Texas, have invented a certain 'new' and useful Improvement in Break-Out Pins, of which the following is a full, clear, and exact description,

such as will enable others skilled in'thezart to which it appertains to make and use the 0 v same. v

My invention" relates to an improvement in break-out pins to be used in connection with the drilling rotary on the derrick platnaryconstruction to hold the same stationary. Another wrench is then placed upon the pipe above the joint and is used to unscrew the upper section of pipe from the joint below. In this operation, the lower form, in the operation of screwing and un-' screwlngpipe in well drilling. V

In the drilling-of wells, in earth for oil, water, gas, etc.,it is customary to raise the pipe to. be unscrewed slightly above the derrick platform 1 so that the joint may be gripped by a pipe wrench or tongs of ordii wren ch, after it has been engaged upon the plpe'jomt, is allowed to swlng around untll the handle of the wrench comes in contact with a break-out pin, which is placed withina hole in the rotary or'platiorm in some'prearranged position. 'The break-out pin ordinarily used is a straight bar of iron or some other rigid material. The contact of the wrench handle with the break-out pin serves to prevent further rotation of the wrench so that the pipe joint will beheld 'stationary Tlieoper'ationfof the other wrench upon the section of pipe above will serve to force the handle of the lower wrench tightly against the upper end of the break-out pin. The contactof the wrench handle with the pin'will prevent the rotation oi the pipe so that the operation of the other rench will serve to unscrew or ,break the joint of plpe so that the length of pipe above may be removed.- The diiiiculty usually experienced "with the ordinary type of break-out pin is a so that when the joint of pipe has been broken it is very difficult to release the wrench which is 'heldin tight contact with the break-pout pin. The wrench. is usually 7 lockedrather securely upon the pipe and as it is held tightly against the-pin it is difli-' cult to remove the pin without first releas.

ing the wrench.

. An object of my invention is to providea 1 break-out pin which will allow the handle of the wrench to swing past the pin and be thus easily released from the pipe when so desired, but which will be so constructed as to ma1ntain a rigid support to prevent the rotation of the wrench duringthe break-out operation. I

Otherobjects will more clearly appear, in the descrlption which follows, and will also claims. 7 V v Referring to the drawing forming a part of this specification, andwherein like parts are designated by like numerals of reference throughout the: several views, Figure l is'a side elevationof the upper end of my be pointed out with particularity in the improved break-out pin showing the upper end thereof in its openpo'siti on, some parts being brokenaway for greater clearness; Fig. 2 is a side elevation taken at right angles to the view. shown in F-igl lillustrating the break-out pin in its'closed or operative position; Fig.3 is a view similar to that shown in Fig. 1 illustrating a slightly difierent embodiment of my invention;

l is a view similar to that shown in Fig. 3 llustrating the break-out pin in closed {position. 7

My improved break-out pin consists of a lower supporting post 1, which is shown in" Fig. 2 as being seated rotatably within an opening in the platform 2' of a rotary, 'the openingin the rotary being surrounded by an upwardly extending 'collar or flange 3 for better" support for the saidpost. It is 'unde'rstoochof course, that in ordinary practice holes are usually bo'redin the base of the flange 3 may be used or-not as foundv best.

and is provided with a lateral groove 45 ad- "rotary or in the platform, and the collar or The post 1 isvrotat'able within the collar 3 i j acent 'the upper end thereof, said groove.

providing a seat into' which the upper piv- Y oted stop member 5 is seated. -This groove is open atone side and the stop pin 5. is

pivoted upon a pin 6 adjacent the lower end thereof in such manner that it may be i I throwninto horizontalpositiom as shown in Fig. 1, and when m tillS pos tion a forward rounded face 7 thereof will contact with the shoulder 8 provided at the lower endfof the gr'oovef4. The rearward sidejl5fo'f the groove atthe upper end of, the post 1 constitutes a stop to limit the movement of'the pin 5 in one direction. The upper walls of the slot at may be beveled or tape-red backward to the upper wallof the slot as shown at 9. At the upper end of the pivoted stop pin 5, I prefer to fix a handle which is preferably a round pin threaded at one end joint 1% of a string of pipe. In this position it will be noted that the contact of the wrench arm with the stop pin will prevent the rotation or swinging of the wrench handle beyond the pin. When the joint has been broken the operator will grasp the handle 10 of the break-out pin and turn the pin within the support 2 at an angle of 90 from the position shown. This rotation of the pin is facilitated by the rounding (2f the stop pin 5, as shown at 7. When the breakout pin is in that position it can then be thrown down into open position, as shown in Fi 1, and the handle of the wrench may then be swung around and the wrench detached from the pipe.

In Figs. 3 and I have illustrated a slightly difierent embodiment of my invention. In this embodiment the post 1 is provided with a groove 4. in the upper end similar to that shown in Fig. 1, except that the rear wall is provided with an opening or slot 16 at the lower end thereof on the opposite side from the groove l. Also the lower end of the groove 4 is beveled backwardly at 18 toward the lower end of at 17 on the lower end thereof to contact with the beveled portion 18 just described.

The upper end of the pin 5 may be, if desired, provided with transverse notches or corrugations 19 for the purpose of furnishing a better seat or support for the handle of the wrench which will be adapted to seat therein. V j v In this modification the pin in its erect or closed position, as shown in Fig. 4:, will come into contact with the upper wall 15 of the, groove a, and the lower beveled face 17 will also be limited by contact with the beveled face' lS of the groove at. When the pin is thrown into open position to allow the wrench to be released, the lower end of the stop pin 5 will contact with the upper wall of the slot 16 and prevent the stop pin f5 from. fallingbeyond' the horizontal position shown in Fig. 3.

Thepurpose of my'invention will now be clearly understood as it will be obvious that the pin may be broken at the central point by simply turning the post within its open- -yond a horizontal position. the slot 16, and the stop pins is also beveled ing in the platform and throwing the pin down to a point below the handle of the wrench, and then the wrench may be easily swung around and released. Much time will be saved by means of this form of break-out pin and it will also prevent the breakage usually occurring when the wrench and the claim as new and desire to protect by Let- I ters Patent is: r

1. In a break-out pin, a supportingpost, the upper end thereof being provided with a lateral groove, a stop pinpivoted at its lower end in said groove, and a handle at the upper end of said pin.

2. In a, break-out pin, a supporting post mounted rotatably in a supporting platform, I

a lateral'groove inthe upper end thereof, a

stop pin pivoted in the lower end of said groove, and adapted to contact with the rear wall of said groove in the manner described.

3. In a break-out pin, a supporting post, I i

a stop pin pivoted adjacent the upper end thereof, means to prevent the swinging of. said pm beyond a vertical position in one direction, and means to prevent the swinging of said pin in the opposite direction be:

l. In a break-out pin, a platform, a su p porting post mounted rotatably therein, a

stop pin pivoted adjacent the upper end of said post, the outer face of said pin being rounded, means to prevent the swinging of said pin beyond a vertical position in'one direction and means to prevent its swinging beyond a horizontal position in'the opposite direction.

the lower end of said groove opening in the opposite direction from said groove, a stop pin pivoted toward the lower end of said groove, said stop pin being rounded on the forward face thereof and provided with notches near the upper end thereof.

6. In a break-out pin, a supporting post rotatably mounted in an opening in a. support, the upper end of said pin being pro vided with a groove on the forward side thereof, a slot in the lower end-of said groove on the rearward side thereof, astop pin pivoted in said groovc, the rearward' wall of said groove adapted to prevent the swinging of said pin in a rearward direcupper end of said post, means to prevent the tion, the upper Wall of said slot adapted to swinging of said pin on said post beyond a prevent the movement of said pin in a forvertical position in one direction. 10 Ward direction beyond a horizontal position, In testimony whereof, I hereunto aifix my- 5 and a handle at the upper end of said pin. signature this the 8th day of July, A. D.

7. In a break-out pin, a rotatable support- 1919. ing post, a stop pin pivoted adjacent the JAMES O. HEADRICK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, D. C. V 

